CCHRC is developing and testing building envelope designs that can withstand cold climates and healthy indoor humidity levels. The Mobile Test Lab has nine test wall bays, each with a different configuration of studs and insulation—including a control wall with fiberglass batt insulation.

CCRHC tested eight types of common window insulation treatments during a Fairbanks winter to see how they handled heat loss and moisture buildup. Exterior insulation methods, like shutters and storm windows, tended to perform the best and have the fewest condensation problems.